SUBJECT INDEX 



1337 



Monochromators, 276 



Monosomies, 1281, 1290 



Morphological effects, in re photoperiod- 

 ism, 692 



Morphology, of fungi, in re irradiation, 

 895, 908 

 of green plants, in re X-raj's, 973 



Motor responses, to light, in invertebrate 

 animals, 573-623 



Muscles, irradiation of, 518 



Mutability, in re irradiation, species 

 differences, 1270 



Mutation (in animals), 1209-1261; and 

 chromosomal breakage, 1221; char- 

 acteristics of the process, 1213; 

 "group effects" in, 1225; lethal 

 mutation rate, 1229; localized occur- 

 ence, 1219; nature of process, 1250; 

 "position effect" and, 1222; quanti- 

 tative study of, 1211; rate, 1227; 

 rate in different tissues, 1230; rates 

 at different loci, 1213; relation 

 between lethal and viable, 1227; 

 spontaneous, causes of, 1248; sta- 

 bility in an allelomorphic series, 1216 



Mutation, in re irradiation (in animals), 

 1209-1261; "direct effects," 1246; 

 discovery of effect, 1210; induced 

 changes of susceptibility, 1244; in- 

 tensity relations, 1238; mode of 

 action, 1236; quantum theory of 

 absorptions, 1311; time factor, sec- 

 ondary reactions, 1243; wave- 

 length dependence, 1241 



Mutation (in plants), vs chromosomal 

 aberrations, 1263; effective radia- 

 tions, 1268; effects of radium rays 

 on, 1004; gene, 1282; induced by 

 radiation, 1263 



Mya, response to light, 592 



Mycetocrit technique, in mitogenetic 

 radiation, 927 



N 



Nemertina, regeneration in, 430 



effects of X-rays on, 430 

 Neon lamps, effects on green plants, 722 

 Nerve tissue, irradiation of, 507 

 Nondisjunction, 1171 

 Nucleus, sensitivity of, to irradiation, 

 627, 1312 



Vol. 1 contains pp. 1 to 



Nutrient medium, radiation and, with 

 fungi, 893, 902, 906-909; with bac- 

 teria, 1129 



Nutrition, mineral, and light intensity, 

 750 



O 



Onagraceae, effects of light on germina- 

 tion, 806 



Onion root tips, in mitogenetic radiation, 

 as detectors, 922 



Oscillator, half -wave, 555; push-pull, 554 



Pecten, response to light, 593 

 Percentages, statistical treatment of, 227 

 Perinealiility, cellular, effect of visible 

 light on, 628, 644; of radium, 634; of 

 X-rays on, 637; of ultra-violet on, 

 633 

 pH {see H-ion concentration) 

 Phacelia, effects of light on germination, 



811 

 Phosphorescence, 36; effects of radiation 



on, in fungi, 909 

 Photocatalyst, 270 

 Photocell, 194, 196 

 Photochemical, calculations, 280 

 factors, effects of, 271 

 kinetics, 269 

 phenomena, 263 



reactions, 282; acetone, 282; acetylene, 

 282; aldehydes, 283; ammonia, 

 284; anthracene polymerization, 

 284; bromination of cinnamic acid, 

 286; bromine-hydrogen, 287; chlo- 

 rination of benzene, 287; chlorina- 

 tion of trichlorobromo-methane, 

 291; chlorination of tetrachloro- 

 ethylene, 288; chlorine-hydrogen 

 combination, 289; Eder's reaction, 

 291; fulgides, 291; fumaric maleic 

 acid isomerization, 292; hydriodic 

 acid, 293; hydrogen peroxide, 292; 

 impurities and, 275; intensity and, 

 274; iodine and ferrous ion, 294: 

 laws, 259; mercury vapor, 294; 

 monochloro-acetic acid hydrolysis, 

 294; nitrate ion, 296; nitrogen 

 dioxide, 294; nitrogen pentoxide, 

 676; Vol. 2, pp. 677 to 1330. 



